Earnings Per Share (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net income (loss) attributable to Reading International, Inc.	$ (6,916)	$ (4,400)	$ (29,485)	$ (18,289)
Weighted average number of common stock – basic	22,426,184	22,273,423	22,394,385	22,208,757
Weighted average dilutive impact of awards	776,008	1,240,292	871,190	1,240,292
Weighted average number of common stock – diluted	23,202,192	23,513,715	23,265,575	23,449,049
Basic earnings (loss) per share	$ (0.31)	$ (0.20)	$ (1.32)	$ (0.82)
Diluted earnings (loss) per share	$ (0.31)	$ (0.20)	$ (1.32)	$ (0.82)
Awards excluded from diluted earnings (loss) per share	207,657	205,122	207,657	205,122